Cast Iron Skillet vs. Ceramic-Coated Non-Stick Pan

Ceramic non-stick pans use a sol-gel silica-based coating applied over an aluminum core. The coating itself is PTFE-free and PFAS-free, which makes it a significant improvement over traditional Teflon. However, the sol-gel coating is thinner and less durable than PTFE — most ceramic pans lose their non-stick properties within 1-3 years of regular use, at which point the underlying aluminum may be exposed.

Cast iron has no coating of any kind. It is pure iron and carbon, with a seasoning layer of polymerized oil that is not a synthetic coating. Cast iron is essentially indestructible with normal use and improves over time rather than degrading.

Both are good choices compared to PTFE pans, which is why both rate well. The key difference is longevity and what happens as the pan ages. A degraded ceramic non-stick pan that is scratched or flaking should be replaced; a cast iron pan never needs replacing. For pure safety, cast iron wins because there is no coating at all — no synthetic material to concern yourself with at any temperature or after any amount of wear. Ceramic non-stick is a reasonable choice for those who need low-effort non-stick cooking, but cast iron is the more durable and chemically inert long-term investment.